19 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 63116 | Saint Louis | 42,170 |
| 63118 | Saint Louis | 25,913 |
| 63109 | Saint Louis | 25,236 |
| 63139 | Saint Louis | 21,631 |
| 63108 | Saint Louis | 21,336 |
| 63104 | Saint Louis | 19,007 |
| 63111 | Saint Louis | 18,851 |
| 63112 | Saint Louis | 17,985 |
| 63110 | Saint Louis | 17,645 |
| 63115 | Saint Louis | 14,488 |
| 63113 | Saint Louis | 10,221 |
| 63107 | Saint Louis | 8,909 |
| 63103 | Saint Louis | 8,778 |
| 63147 | Saint Louis | 8,173 |
| 63120 | Saint Louis | 6,790 |
| 63106 | Saint Louis | 6,751 |
| 63101 | Saint Louis | 3,130 |
| 63102 | Saint Louis | 2,882 |
| 63155 | Saint Louis | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 19 ZCTAs in St. Louis city, Missouri (US Census).